Study of the kinetics of austenite grain growth by dynamic Ti-rich and Nb-rich carbonitride dissolution in HSLA steel: In-situ observation and modeling

2020 ◽  
Vol 169 ◽  
pp. 110612
Author(s):  
Yang Zhang ◽  
Xiaohua Li ◽  
Yongchang Liu ◽  
Chenxi Liu ◽  
Ji Dong ◽  
...  
Keyword(s):  
Grain Growth ◽  
Hsla Steel ◽  
In Situ Observation ◽  
Austenite Grain ◽  
Austenite Grain Growth ◽  
Kinetics Of

Evaluation of Austenite Grains Growth in High Nb and Low Nb HSLA Steel

2020 ◽  
Vol 1000 ◽  
pp. 404-411
Author(s):  
Eddy S. Siradj
Keyword(s):  
Grain Size ◽  
Grain Growth ◽  
Oil And Gas ◽  
Hsla Steel ◽  
Large Diameter ◽  
Low Carbon ◽  
Austenite Grain Size ◽  
Austenite Grain ◽  
Reheating Process ◽  
Austenite Grain Growth

This study was presented due to the increasing demand of High Strength Low Alloy (HSLA) steel, such as demand for thinner-walled and large diameter pipes in oil and gas industries. In order to meet the imposed economic restrictions, the high standard of all kinds of steel properties is required and can be achieved by controlling the steel microstructure. The austenite grain size influences the microstructure and properties of steel significantly, in which fine austenite grain size leads to higher strength, better ductility, and higher toughness. Studying the behavior of steel grain growth during the reheating process is still being a fascinating subject. P.R. Rios and D Zollner [1] mentioned that grain growth is the most important unresolved issue that has been a topic of research for many years. In this research, the behavior of austenite grain growth at a high niobium-low carbon (High Nb-low C) and low Nb-high C HSLA steel was evaluated, and the result was compared with other investigation. The results found that the austenite grain growth at high Nb-high C steel was slower than the growth at a low Nb-low C steel. The activation energy of austenite grain growth and both constant A and exponent n ware determined close agreement was obtained between the prediction of the model and the experimental grain size value.

Kinetics of austenite grain growth in medium-carbon niobium-bearing steel

2011 ◽  
Vol 12 (3) ◽  
pp. 171-176 ◽  
Author(s):  
Ying-li Zhao ◽  
Jie Shi ◽  
Wen-quan Cao ◽  
Mao-qiu Wang ◽  
Gang Xie
Keyword(s):  
Grain Growth ◽  
Bearing Steel ◽  
Medium Carbon ◽  
Austenite Grain ◽  
Austenite Grain Growth ◽  
Kinetics Of

scholarly journals In situ measurement and modelling of austenite grain growth in a Ti/Nb microalloyed steel

2012 ◽  
Vol 60 (3) ◽  
pp. 1015-1026 ◽  
Author(s):  
M. Maalekian ◽  
R. Radis ◽  
M. Militzer ◽  
A. Moreau ◽  
W.J. Poole
Keyword(s):  
Grain Growth ◽  
Microalloyed Steel ◽  
In Situ Measurement ◽  
Austenite Grain ◽  
Nb Microalloyed Steel ◽  
Austenite Grain Growth
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